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Finding the Fourth Proportional to 682.04, 939.50 and 550.68

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Solution

The fourth proportional to 682.04, 939.50 and 550.68 is: 758.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.04 : 939.50 = 550.68 : x
  2. Step 2: Convert to fraction form
    682.04/939.50 = 550.68/x
  3. Step 3: Cross multiply
    682.04x = 939.50 × 550.68
  4. Step 4: Simplify right side
    682.04x = 517,363.86
  5. Step 5: Solve for x
    x = 517,363.86/682.04
  6. Step 6: Final answer
    x = 758.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.